/*
 * Copyright 2006-2008 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.martinimix.webflow.accessor;

import javax.servlet.http.Cookie;

import org.springframework.webflow.execution.RequestContext;

/**
 * Provides access to HTTP cookies from a web flow's external context.
 * 
 * @author Scott Rossillo
 *
 */
public final class HttpServletRequestCookieAccessor extends
		AbstractHttpServletRequestObjectAccessor implements FlowObjectAccessor {

	/**
	 * Returns a the cookie with the given name.
	 * 
	 * @see net.martinimix.webflow.accessor.FlowObjectAccessor#getObject(java.lang.String, org.springframework.webflow.execution.RequestContext)
	 */
	public Object getObject(String objectName, RequestContext context) {
		
		Cookie[] cookies = super.getHttpServletRequest(context).getCookies();
		
		if(cookies != null && objectName != null) {
			for(int i = 0; i < cookies.length; i++) {
				if(objectName.equals(cookies[i].getName())) {
					return cookies[i];
				}
			}
		}
		
		return null;
	}

	/**
	 * Sets the cookie with the given name.
	 * 
	 * @see net.martinimix.webflow.accessor.FlowObjectAccessor#putObject(java.lang.String, java.lang.Object, org.springframework.webflow.execution.RequestContext)
	 */
	public void putObject(String objectName, Object object, RequestContext context) {
		super.getHttpServletResponse(context).addCookie((Cookie) object);
	}

}
